[PATCH] user32: handle undocumented WM_POPUPSYSTEMMENU message

[Vincent Povirk]

---
 dlls/user32/defwnd.c       |    8 ++++++++
 dlls/user32/spy.c          |    3 ++-
 dlls/user32/user_private.h |    1 +
 3 files changed, 11 insertions(+), 1 deletions(-)

diff --git a/dlls/user32/defwnd.c b/dlls/user32/defwnd.c
index ba07ebb..d48ba0f 100644
--- a/dlls/user32/defwnd.c
+++ b/dlls/user32/defwnd.c
@@ -385,6 +385,14 @@ static LRESULT DEFWND_DefWinProc( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lPa
         }
         break;
 
+    case WM_POPUPSYSTEMMENU:
+        /* This is an undocumented message used by the windows taskbar to 
+           display the system menu of windows that belong to other processes. */
+        TrackPopupMenu(GetSystemMenu(hwnd, FALSE),
+                        TPM_LEFTBUTTON|TPM_RIGHTBUTTON,
+                        LOWORD(lParam), HIWORD(lParam), 0, hwnd, NULL);
+        return 0;
+
     case WM_NCACTIVATE:
         return NC_HandleNCActivate( hwnd, wParam, lParam );
 
diff --git a/dlls/user32/spy.c b/dlls/user32/spy.c
index 41caf1d..9fbd74b 100644
--- a/dlls/user32/spy.c
+++ b/dlls/user32/spy.c
@@ -592,7 +592,8 @@ static const char * const MessageTypeNames[SPY_MAX_MSGNUM + 1] =
     "WM_PALETTEISCHANGING",
     "WM_PALETTECHANGED",
     "WM_HOTKEY",                /* 0x0312 */
-    NULL, NULL, NULL, NULL,
+    "WM_POPUPSYSTEMMENU",       /* 0x0313 */
+    NULL, NULL, NULL,
     "WM_PRINT",                 /* 0x0317 */
     "WM_PRINTCLIENT",           /* 0x0318 */
     "WM_APPCOMMAND",            /* 0x0319 */
diff --git a/dlls/user32/user_private.h b/dlls/user32/user_private.h
index 909686d..8a5989a 100644
--- a/dlls/user32/user_private.h
+++ b/dlls/user32/user_private.h
@@ -82,6 +82,7 @@ static inline HLOCAL16 LOCAL_Free( HANDLE16 ds, HLOCAL16 handle )
 #define GET_DWORD(ptr) (*(const DWORD *)(ptr))
 
 #define WM_SYSTIMER	    0x0118
+#define WM_POPUPSYSTEMMENU  0x0313
 
 /* internal messages codes */
 enum wine_internal_message
-- 
1.5.4.3


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